21257522

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{233}}^1$

素因数の和:299

約数の個数: 48

約数和(自身を含む): 39213720

約数和(自身を除く): 17956198

約数列:

[1, 2, 11, 13, 22, 26, 29, 58, 121, 143, 233, 242, 286, 319, 377, 466, 638, 754, 1573, 2563, 3029, 3146, 3509, 4147, 5126, 6058, 6757, 7018, 8294, 13514, 28193, 33319, 45617, 56386, 66638, 74327, 87841, 91234, 148654, 175682, 366509, 733018, 817597, 966251, 1635194, 1932502, 10628761, 21257522]

約数ペア:

[(1, 21257522), (2, 10628761), (11, 1932502), (13, 1635194), (22, 966251), (26, 817597), (29, 733018), (58, 366509), (121, 175682), (143, 148654), (233, 91234), (242, 87841), (286, 74327), (319, 66638), (377, 56386), (466, 45617), (638, 33319), (754, 28193), (1573, 13514), (2563, 8294), (3029, 7018), (3146, 6757), (3509, 6058), (4147, 5126)]